| A | B |
|---|
| Paleolithic | Old Stone Age; people followed food |
| Neolithic | New Stone Age; people grew food |
| archaeologist | scientists who study artifacts and fossils |
| nomads | hunter-gatherers |
| bipedalism | walking on two feet |
| Agricultural Revolution | period around 8000 BC when people began farming and keeping animals |
| Africa | continent where earliest human fossils have been found |
| History | study of written records |
| pictograms | writing using pictures instead of letters |
| artifacts | man-made items found by archaeologists, such as pottery and jewelry |
